The 3rd to last interview question is already causing controversy on the imdb board. Despite Ridley stating he hasn't decided on a rating and that he'd do everything to get the most aggressive film he could, he also described the film as:
"Essentially, it's kinda R. The little bastards will still get in anyway, so what's the difference? It's not just about blood, it's about ideas that are very stressful."
This is being interpreted as an indirect acknowledgement of a PG13 rating.